Patient monitor User’s manual
Chapter 7-12
7.6.5.1 ST Map Display
The monitor can derive a multi-axis portrait from the ST analysis (each
axis represents a lead), It displays two planes obtained from a multilead ECG in
a multi-axis diagram.As the following diagram. In the diagram, each axis
represents a limb lead, or a chest lead.The positive value (+) of each axis with
the name of relate lead. The ST value of every lead has a dot on the map, then
six dots connect to a circle, that is ST map.
The left of the following diagram shows the limb leads: I, II, III, aVR, aVL,
and aVF. On the right, shows the chest leads: the V-leads (V1, V2, V3, V4, V5,
and V6).
1. If a lead ismeasuring, but the result is unavailable to get or invalid value, and
there is no relate dots on the axis, so that the area formed by the remaining ST
leads is left open.As is show on the following diagram:
2. If the values of both two side axis are invalid, the middle axis will be
ignored, the dots on the left axes formed the open area. For example, the
values of avF, avR lead are both invalid, the value of II lead will be ignored,
and then the I, III, and avL axes formed the open area. As is show on the
following diagram:
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